892 MONOC.KAI'IIS OF NORTH AMERICAN RODENTIA. 



CYNOMYS LUDOVICIANUS (Ord) Baird. 

 Missouri Barking Squirrel; Missouri "Prairie Dog". 



Arotomyi ludoricianus "Ord, Guthrie's Gcog. 2d Am. ed. ii, 1815, 292, 302."— Say, Long's Expeil. Ry. Mts. 

 i, 182!!, -1 r> 1 (description), 498 (villages).— Harlan, Faun. Am. 1825, 160— Godman, Am. Nat. 

 lli-t. ii. 1-Jii. 111. -II. Smith, Griffith's Cuvicr's An. King, iii, 1827, 198 (with an original 

 but very erroneous figure from Lewis and Clarke's specimen) ; v, 1827, 247. — Prince Max., 

 Raise in d. in. Nord-Amer. i, is:!9, 365.— Wagner, Suppl. Schreber's Siiuget. iii, 1843,261.— 

 SCHINZ, Syn. Mam. ii, 1*45, 64.— STAKSBUKY, Salt Lake Exped. 1852, 37. 



Bpermophilus ludovicianus LESSON, Man.de Mam. 1827,244. — "F. Cuvier, Suppl. Buffon's Hist. Nat. i, 

 Mamm. 1831, 316."— AUDUBON & BaCHMAN, Quad. N. Am. ii, 1851,319, pi. xcix.— Marcy, 

 Bed Eivei Exped. 1853, 46. — WOODHOUSE, Sitgreaves's Expl.Zuiii and Colorado Rivers, 1853, 

 52— KENNICOTT, U. B. Pat. Off. Rep. Agricul. 1856 (1857), 81, pi. ix. 



Cynomys ludoricianus BaIRD, Mam. N. Am. 1857, 331, pi. xlvii (skull and dentition); U. S. and Mex. 

 Bound. Surv. ii, 1859, pt. iii, 39.— Sucki.ey, Aat. Hist. Wash. Ter. pt. iii, 1859, 99, 123.— 

 Thomas, Traus. 111. State Agr. Soc. iv, 1860, 657 (Illinois [?]).— Maximilian, Arch. f. Natur- 

 gexch. 1861, 88.— Ha yden, Trans. Am. Phil. Soc. Phila. xii, 1863, 145.— Stevenson, Hayden's 

 Rep. U. S. Geol. Surv. Wyom. 1.-71, 462.— Ai.len, Bull. Essex Institute, vi, 1674, 49 (bio- 

 graphical); Proc. Bost. Soc. Nat. Hist, xvi, 1874, 294; xvii, 1874, 43. — Grinnell, Ludlow's 

 Ree. Black Hills of Dakota, 1875, 82. — Merrill, Forest and Stream, vi, 1876, 369 (habits). — 

 "Plume del Rosa", ib. vii, 1876, 52 (domestication). 



Cynomys socialis Raitnesq.ue, Am. Month. Mag. ii, 1817, 45 (= " Barking Squirrel ", Lewis and Clarke). 



Cynomyn grisea RAFINESQUE, Am. Month. Mag. ii, 1817, 45 (= " Petit Chien", Lewis and Clarke). 



Arotomys griseus Fischer, Syn. Mam. 1829. 345 (from Ratinesque). 



Arctomys missouriensis Warden, Descrip. Etats-Unis, v, 1820, 627 (= " VVishtonwish ", Pike). — Desmarest, 

 Mam. L822, 329 (from Warden). 



Arclomys latrans Harlan, Faun. Amer. 1825 306 (== " Barking Squirrel", Lewis aud Clarke). — Fischer, 

 Syn. Mam. 1829, 345 (from Harlan). 



Petit Chien, Lewis & Clarke, Travels, 1st Am. ed. i, 1815, 68. 



Prairie Dog, Lewis & Clarke, Travels, i, 1815, 67.— Kendall, Nar. Santa F6 Exped. i, 1844, 188. — Gregg, 

 Commerce of the Prairies, ii, 1845, 228. 



Harking Squirrel, Lewis & Clarke, Travels, 1st. Am. ed. ii, 1815,175; 4to Lond.ed. 1815, 469; 8vo Lond. 

 ed. iii, 1815, 38. 



Wishtonwish, or I'rairic Squirrel, Pike, Travels, 1810, 156, 180. 



Miirmotle dii Missouri, Warden, 1. o. 



Louisiana Marmot, Say, 1. c. 



I'rairic Marmot, Godman, 1. c. • 



Wistonwish, Richardson, 1. c. 



Missouri Prairie Dog, Baird, 1. c. 



Specific chars. — Length of head and body 11.50 to 12.50, ranging 

 from about 11.00 to 13.00; tail to end of vertebrae 3.00 to 4.00; tail to end 

 of hairs 4.00 to 5.00. Above reddish-brown, varied with gray, and with a 

 few hairs wholly black; below yellowish- or brownish-white. Tail short, 

 flattened, basally above like the back, and brownish-black toward the end, the 

 dusky hairs more or less whitish at base. Ears very small, rounded, about 

 one-fifth of an inch high. Claws long and strong, but little curved ; that 

 of the thumb well developed. The character of the pelage varies consider- 

 ably with the season, being much finer and softer in winter than in summer. 



In specimens taken in June and July, the pelage is quite short, some- 



